Cephalurus cephalus, Lollipop catshark

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Cephalurus cephalus (Gilbert, 1892)

Lollipop catshark
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Cephalurus cephalus   AquaMaps   Data sources: GBIF OBIS
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Cephalurus cephalus
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板鰓亜鋼(サメとエイ類) (sharks and rays) > Carcharhiniformes (Ground sharks) > Pentanchidae (Deepwater catsharks)
Etymology: Cephalurus: cephalus, from kephale (Gr.), head, referring to its expanded, flattened and rounded head; ailouros (Gr.), cat, probably an allusion to the vernacular “catshark,” so named for its cat-like eyes. (See ETYFish);  cephalus: From kephale (Gr.), head, allusion not explained, probably referring to its expanded, flattened and rounded head, “much wider” and with larger pores compared with the similar Parmaturus xaniurus, its presumed congener at the time. (See ETYFish).
More on author: Gilbert.

Environment: milieu / climate zone / depth range / distribution range 生態学

深海魚; 深さの範囲 155 - 927 m (Ref. 244). Deep-water; 32°N - 15°S

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Eastern Central Pacific: southern Baja California, Mexico and Gulf of California. Cephalurus specimens from Panama, Peru and Chile differ from Cephalurus cephalus and may represent one or more new species.

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm ?, range 19 - ? cm
Max length : 28.0 cm TL オス/雌雄の選別がない; (Ref. 244); common length : 24.0 cm TL オス/雌雄の選別がない; (Ref. 244)

生物学     用語集 (例 epibenthic)

Found on the upper continental slope and outermost shelf. The expanded branchial region of this shark suggests that they are adapted to bottom areas with low dissolved oxygen levels. With little information available, reproductive mode could either be ovoviviparous (Ref. 244, 53776) or oviparous, paired eggs are laid (Ref. 50449).

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Other sources describe ovoviviparity as an alternative reproductive mode (Ref. 244, 53776).

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)

IUCNのレッドリストの状況は (Ref. 130435)

  軽度懸念 (LC) ; Date assessed: 06 February 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

水産業: 興味がない
FAO - Publication: search | FishSource |

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Estimates based on models

Preferred temperature (Ref. 123201): 7.9 - 14.8, mean 9.5 °C (based on 31 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00398 (0.00236 - 0.00672), b=3.06 (2.91 - 3.21), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
栄養段階 (Ref. 69278):  3.7   ±0.4 se; based on diet studies.
回復力 (Ref. 120179):  非常に低い, 14年以上の倍増期間の最小個体群 (Fec=2).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (18 of 100).